CN114224357A - Helmet for comprehensively monitoring health state of pilot - Google Patents
Helmet for comprehensively monitoring health state of pilot Download PDFInfo
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- CN114224357A CN114224357A CN202111392482.6A CN202111392482A CN114224357A CN 114224357 A CN114224357 A CN 114224357A CN 202111392482 A CN202111392482 A CN 202111392482A CN 114224357 A CN114224357 A CN 114224357A
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- A61B5/14551—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases
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- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
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Abstract
The invention discloses a helmet for comprehensively monitoring the health state of a pilot, which comprises an electroencephalogram acquisition device with a superfine elastic bristle structure, a blood flow condition detection device and a complexion detection device. The electroencephalogram acquisition device with the superfine elastic bristle structure can be in elastic contact with scalp to perform good electrical connection, so that electroencephalogram signals can be accurately acquired; the blood flow condition detection device identifies the blood oxygen signal characteristics by collecting subcutaneous blood oxygen concentration change signals of the pilot and indicates whether the blood flow condition of the head of the pilot is normal or not; the complexion detection device can collect and shoot skin images around the eyes of the pilot and judge whether the complexion is normal or not. The comprehensive monitoring helmet for the health state of the pilot monitors and identifies the physiological state of the pilot in real time, so that the risk is early warned.
Description
Technical Field
The invention relates to the field of biomedicine, in particular to a helmet for comprehensively monitoring the health state of a pilot.
Background
When a pilot flies with high maneuverability, the continuous positive acceleration transfers blood to the lower half of the body, the blood pressure of the cerebral horizontal artery is reduced, the cerebral blood flow is reduced, and then cerebral ischemia and hypoxia are caused, so that consciousness loss and flight visual disturbance are easily caused, judgment errors occur, and great threat is brought to flight safety. Therefore, it is necessary to monitor the physiological state of the pilot in real time, especially parameters such as brain electricity, eye blood flow and blood pressure, facial skin color change, respiration and the like, and the parameters can comprehensively evaluate the flight state of the pilot and warn whether the pilot is about to have abnormal conditions.
The spatial orientation disorder is also called as a flight illusion, and refers to the wrong perception of the flight personnel on the position, the attitude, the motion trail and other parameters of the airplane and the flight personnel in the flight process. Such false sensing can easily cause flight accidents if not discovered and handled in a timely manner. The current research considers that the essence of the space orientation obstacle is that the space orientation organ of the human body cannot meet the high-speed motion environment of the air three-dimensional space. Therefore, the pilot inevitably experiences spatial orientation obstacles in flight.
The spatial orientation disorder can be classified into visual spatial orientation disorder and vestibular spatial orientation disorder according to the inducing factors, and the vestibular spatial orientation disorder caused by vestibular illusion is generally fatal. Because the pilot can not realize the occurrence of the flight illusion in time and lacks effective countermeasures, the space orientation barrier can cause serious flight accidents, thereby causing huge economic loss and personal injury.
Therefore, there is a pressing need in the art for a device that enables comprehensive monitoring of the health status of a pilot that enables the following functions: the physiological state of the pilot is comprehensively monitored in real time, the brain activity state of the pilot is identified, and whether the pilot has an abnormal health state or not can be found in time.
Disclosure of Invention
The invention provides a helmet for comprehensively monitoring the health state of a pilot, which can be in elastic contact with the scalp to carry out good electrical connection so as to accurately acquire electroencephalogram signals, can also be used for acquiring cerebral cortex blood oxygen concentration change signals of the pilot, identifying the characteristics of blood oxygen signals and indicating whether the blood flow condition of the head of the pilot is normal or not, and can also be used for effectively adjusting and early warning by acquiring and judging the complexion information of the pilot.
The invention relates to a helmet for comprehensively monitoring the health state of a pilot, which comprises:
1) superfine elasticity seta structure brain electricity collection system, it includes: the electroencephalogram electrode bundle array comprises 2 n-th-power electroencephalogram electrode bundles, the electroencephalogram electrode bundles are superfine elastic conductive bristle bundles, each superfine elastic conductive bristle bundle comprises 10-30 superfine elastic conductive bristles, an electrode wire is connected to the top end of each superfine elastic conductive bristle, an end cover is arranged at the top end of each superfine elastic conductive bristle, the electrode wire is communicated to the outside through a hole in the end cover, the bottom end, in contact with a scalp, of each superfine elastic conductive bristle is in a circular end head shape and is provided with a blind hole, air guide holes communicated with the outside are further formed in the blind holes, and before electroencephalogram signal detection is carried out, conductive paste or conductive liquid is pre-injected into the blind holes;
2) blood flow situation detection device, it is through gathering pilot subcutaneous blood oxygen concentration change signal, and the discernment blood oxygen signal characteristic indicates whether pilot's head blood flow situation is normal, includes: the near-infrared laser diode is used for emitting near-infrared laser with a fixed wavelength, and two reflected light receiving cameras are respectively arranged on two sides of the near-infrared laser diode and used for receiving reflected near-infrared light absorbed and modulated by subcutaneous blood vessels; when the near-infrared laser diode works, laser emitted by the near-infrared laser diode is emitted into subcutaneous blood vessels, is absorbed by oxyhemoglobin in blood, and is reflected to the reflected light receiving camera through skin; the reflected light receiving camera judges the blood flow state of the head of the pilot by detecting the intensity of the reflected light.
3) And the complexion detection device can collect and shoot skin images around the eyes of the pilot and judge whether the complexion is normal or not. It includes: 3 sets of diffuse reflection light supplementing light sources, 3 acquisition cameras and a color card; the 3 sets of diffuse reflection light supplementing light sources sequentially correspond to the 3 acquisition cameras; each set of diffuse reflection light supplementing light source is annular, the annular structure is concentric with the lens of the acquisition camera, and the annular structure is positioned in front of the acquisition camera; each set of diffuse reflection light supplementing light source comprises 6 patch type true color LED lamp beads and 1 annular light diffusing sheet, wherein the 6 lamp beads are uniformly distributed around the corresponding acquisition camera to form an annular structure; each light-diffusing piece is positioned at a position of 0.5 cm right in front of the lamp bead; the color card is positioned at a position about 2 cm above the front of the acquisition camera, so that the color card is positioned at the top of the field of view of the acquisition camera; the color card consists of 24 standard color blocks which are linearly arranged; the 3 acquisition cameras can shoot a complete color card and the skin around the eyes of a pilot at the same time.
The electroencephalogram acquisition device comprises an electroencephalogram electrode bundle array, wherein the electroencephalogram electrode bundle array is formed by arraying a plurality of electroencephalogram electrode bundles. The brain electrode array is fixed on the inner wall of a helmet body of a pilot and used for collecting brain electrical signals, and the covered area of the brain electrode bundle, namely the superfine elastic conductive bristle bundle, is slightly larger than the area of a traditional brain electrode collecting site, so that the purpose of early warning the health state of the pilot is achieved. The brain electrode bundle array is composed of 2 n-th power brain electrode bundles, and specifically can be 8-bundle, 16-bundle, 32-bundle, 64-bundle, 128-bundle and the like.
The superfine elastic conductive bristle cluster is formed by combining a plurality of superfine elastic conductive bristles, an end cover is arranged at the top end of the superfine elastic conductive bristle cluster, and an electrode wire connected with the top end of the superfine elastic conductive bristle cluster is communicated to the outside from a hole in the end cover. The superfine elastic conductive bristle cluster is formed by combining 10-30 superfine elastic conductive bristles.
The superfine elastic conductive seta is a single brain electrode in the electroencephalogram signal detection device. The bottom end of the superfine elastic conductive bristle is in contact with the scalp and is in a circular end shape, a blind hole is formed in the center of the end from the bottom, a gas guide hole communicated with the outside is further formed in the blind hole, and conductive paste or conductive liquid is injected into the blind hole in advance before electroencephalogram detection is carried out. The top end of the superfine elastic conductive seta is connected with an electrode wire. The inner core of the superfine elastic conductive seta is made of spring steel, and the outer layer is plated with silver; the thickness of the coating is not more than 0.1mm, and the diameter of the bristle is not more than 0.5mm, so the conductive bristle is called as the superfine elastic conductive bristle.
After the electroencephalogram acquisition device is worn, the superfine setae automatically avoid hairs and are directly and tightly contacted with the scalp, and the conductive liquid or the conductive paste is directly adsorbed between the conductive setae and the scalp to form good electrical contact. One end of the bristle cluster far away from the scalp is connected with a flat brain electrode wire and is connected with a signal acquisition unit along the shape of the flying helmet. The electroencephalogram acquisition device is not only suitable for the conventional state, but also more suitable for the special state of pilot work.
On one hand, the electroencephalogram acquisition device has the advantages that in the technical scheme, the ultrafine setae are used as the single electrode, the flexibility and the elasticity are certain, the hair can be naturally avoided when the electroencephalogram acquisition device is used, the single electrode is directly contacted with the scalp, and the accuracy of signal acquisition is greatly improved.
On the other hand, the electroencephalogram acquisition device has the advantage that the end part of the superfine setae is provided with the blind hole for accommodating the conductive liquid or the conductive paste. Before use, the whole brain electrode bundle (namely the superfine elastic bristle bundle) is dipped in a conductive paste or a conductive liquid container, so that the holes at the bottom end of each brain electrode are filled with the conductive liquid or the conductive paste, the use is convenient, and the time for adjustment and preparation is saved.
The blood flow condition detection device identifies the blood oxygen signal characteristics through subcutaneous blood oxygen concentration change signals of the pilot, and indicates whether the blood flow condition of the head of the pilot is normal or not. The behavior and cognition of the human body are closely related to the activity of the brain, and the blood oxygen content is an important index for measuring the active degree of the cortex. When a specific region of the cerebral cortex is activated, it shows an increase in the concentration of oxygenated hemoglobin and a decrease in the concentration of deoxygenated hemoglobin. When different kinds of flight illusions occur, different areas of the cerebral cortex are activated or suppressed and thus exhibit different blood oxygenation properties. The change of the blood oxygen concentration can be obtained by detecting the change of the intensity of the near infrared light by utilizing the difference of the oxygen-containing hemoglobin and the deoxyhemoglobin in the near infrared light absorption rate of different wavelengths. The blood flow condition detection device can monitor the blood flow condition of the head of the pilot by detecting the reflected light condition of the near infrared light emitted into the blood vessel around the eye.
The blood flow condition detection device is provided with a near-infrared laser diode in the middle for emitting near-infrared laser with fixed wavelength, and two reflected light receiving cameras are respectively arranged at two sides of the diode and used for receiving reflected near-infrared light absorbed and modulated by subcutaneous blood vessels. When the device works, the device needs to be tightly attached to the skin above the eye, and laser is injected into subcutaneous blood vessels, is absorbed by oxygenated hemoglobin in blood and then is reflected to a receiving camera through the skin. Because the pulsation of the heart causes the blood flow in the subcutaneous blood vessel to present a pulsating wave, the reflected near infrared light received by the camera can not only evaluate the blood flow state, but also obtain the pulse wave, and further obtain indexes such as blood vessel elasticity, blood pressure and the like. When the pilot is overloaded and ischemic, the blood flow flowing through subcutaneous blood vessels is reduced, the absorbed quantity of the infrared laser is reduced, the reflected light is enhanced, otherwise, the reflected light is weakened, and therefore, once the continuous enhancement of the near infrared light intensity is detected, the continuous reduction of the cerebral blood supply of the pilot can be detected.
The face color detection device of the present invention includes: 3 sets of diffuse reflection light supplementing light sources, 3 acquisition cameras and a color card; the diffuse reflection light supplementing light sources sequentially correspond to the collecting cameras; each set of diffuse reflection light supplementing light source is arranged in an annular shape, the annular structure is concentric with the lens of the collecting camera, and the annular structure is positioned in front of the collecting camera; each set of diffuse reflection light supplementing light source comprises 6 patch type true color LED lamp beads and 1 annular light diffusing sheet, wherein the 6 lamp beads are uniformly distributed around the corresponding acquisition camera to form an annular structure; each light-diffusing piece is positioned at a position of 0.5 cm right in front of the lamp bead. Wherein the color chip is positioned at about 2 cm above the front of the collecting camera so that the color chip is positioned at the top of the field of view of the collecting camera; the color card consists of 24 standard color blocks which are linearly arranged; the 3 acquisition cameras can shoot a complete color card and the skin around the eyes of a pilot at the same time.
The light source driving circuit further comprises 3 light source driving circuits, and each circuit is located on the back face of the corresponding diffuse reflection light supplementing light source.
When the face color detection device works, the collection camera shoots a complete color card and a skin image around the eyes of a pilot at the same time, color blocks and the skin image are respectively segmented and extracted, three channel color values of the chroma, the saturation and the brightness of each color block and each skin are obtained, and the three channel color values are sent to the neural network model for color correction. And analyzing the chromatic value of the corrected skin image, when the pilot is about to faint, the facial skin becomes pale, the chromatic value component is deviated to a white area, and whether the facial color is pale can be judged according to the chromatic distance from the white area.
Drawings
In order to more clearly explain the embodiments of the present invention, the drawings which are required to be used in the examples will be briefly described below, and the features and advantages of the present invention will be more clearly understood by referring to the drawings. The drawings are schematic and should not be construed as limiting the invention in any way, and other drawings may be derived from those drawings by a person of ordinary skill in the art without inventive step.
FIG. 1: structure schematic diagram of single electroencephalogram electrode, namely superfine elastic conductive seta
FIG. 2: schematic end cap
FIG. 3: schematic diagram of brain electrode bundle (i.e. superfine elastic conductive bristle bundle)
FIG. 4: schematic diagram of blood flow condition detection device
FIG. 5: schematic diagram of face color detection device
FIG. 6: a-direction partial section schematic diagram of face color detection device
FIG. 7: schematic diagram of annular structure formed by each set of diffuse reflection light supplementing light source
FIG. 8: schematic diagram of back of each set of diffuse reflection light supplementing light source
FIG. 9: helmet schematic diagram for comprehensively monitoring health state of pilot
Wherein the reference numerals denote:
the device comprises a brain electrode body 1, a brain electrode body 2, air guide holes 3, blind holes 4, an end cover body 5, electrode holes 5, electrode wires 6, a light diffusion sheet 7, a near infrared laser diode 8, a reflected light receiving camera 9, a surface color collecting camera 10, a color card 11, a patch type true color LED lamp bead 12, a light source driving circuit 13, a helmet body 14, a superfine elastic conductive bristle bundle 15, a blood flow condition detection device 16 and a surface color detection device 17.
Detailed Description
So that the objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof that are illustrated in the appended drawings.
In one embodiment of the present invention, the pilot helmet of the present invention comprises the electroencephalogram acquisition device with ultrafine elastic bristle structure of the present invention shown in fig. 3, which is fixed inside the body of the pilot helmet. The electroencephalogram acquisition device comprises an electroencephalogram electrode beam array consisting of 64 groups of electroencephalogram electrode beams. The brain electrode bundle is a bundle of ultra-fine elastic conductive bristles as shown in fig. 1, and 30 bundles are counted. In this embodiment, the top end of the ultrafine elastic conductive bristle is connected with an electrode wire, an end cover is disposed at the top end of the ultrafine elastic conductive bristle bundle, and the electrode wire is communicated to the outside through a hole in the end cover. The superfine elastic conductive bristles in the embodiment comprise a round bottom end in contact with the scalp as shown in figure 1, and are provided with blind holes, and the blind holes are also provided with air guide holes communicated with the outside. The inner core of the superfine elastic conductive bristle is made of spring steel, and the outer layer is plated with silver; the thickness of the plating layer is not more than 0.1mm, and the diameter of the bristles is 0.5 mm. Before a pilot wears the helmet to detect the electroencephalogram signals, the whole electroencephalogram electrode bundle is dipped in a conductive paste or conductive liquid container, and the conductive liquid or conductive paste can be filled in the holes at the bottom end of each electroencephalogram electrode. The pilot helmet of the present invention further comprises a blood flow condition detection device shown in fig. 4, which includes: the near-infrared laser diode is used for emitting near-infrared laser with a fixed wavelength, and two reflected light receiving cameras are respectively arranged on two sides of the near-infrared laser diode and used for receiving reflected near-infrared light absorbed and modulated by subcutaneous blood vessels; when the near-infrared laser diode works, laser emitted by the near-infrared laser diode is emitted into subcutaneous blood vessels, is absorbed by oxyhemoglobin in blood, and is reflected to the reflected light receiving camera through skin. The pilot helmet of the present invention further comprises a face color detection device, the face color detection device comprising: a diffuse reflection fill light source as shown in fig. 7, 3 acquisition cameras as shown in fig. 5, and 1 color card as shown in fig. 6; as shown in fig. 5, the diffuse reflection fill light sources are 3 sets, which correspond to the collection cameras in sequence; as shown in fig. 5 and 7, each set of diffuse reflection fill light source is annular, the annular structure is concentric with the lens of the collecting camera, and the annular structure is located in front of the collecting camera; as shown in fig. 7 and 5, each set of diffuse reflection fill light source includes 6 patch-type true color LED lamp beads and 1 annular light diffuser, 6 lamp beads are uniformly distributed around the corresponding collecting camera to form an annular structure, and each light diffuser is located at a position of 0.5 cm in front of the lamp bead. As shown in FIG. 6, the color chip is located approximately 2 cm forward of the capture camera and up to the top of the capture camera's field of view; the color card consists of 24 standard color blocks arranged in a straight line. As shown in fig. 9, all 3 acquisition cameras can shoot the complete color chart and the skin around the pilot's eyes at the same time. As shown in fig. 4, the face color detection device further includes 3 light source driving circuits, and each circuit is located on the back of the corresponding diffuse reflection fill light source.
In another embodiment of the invention, the pilot helmet of the invention comprises the electroencephalogram acquisition device with the ultrafine elastic bristle structure of the invention shown in fig. 3, which is fixed inside the body of the pilot helmet. The electroencephalogram acquisition device comprises an electroencephalogram beam array consisting of 128 groups of electroencephalogram beams as shown in figure 5. The brain electrode bundle is a bundle of ultra-fine elastic conductive bristles as shown in fig. 1, and 10 bundles are counted. In this embodiment, the top end of the ultrafine elastic conductive bristle is connected with an electrode wire, an end cover is disposed at the top end of the ultrafine elastic conductive bristle bundle, and the electrode wire is communicated to the outside through a hole in the end cover. The superfine elastic conductive bristles in the embodiment comprise a round bottom end in contact with the scalp as shown in figure 1, and are provided with blind holes, and the blind holes are also provided with air guide holes communicated with the outside. The inner core of the superfine elastic conductive bristle is made of spring steel, and the outer layer is plated with silver; the thickness of the plating layer is not more than 0.1mm, and the diameter of the bristles is 0.45 mm. Before a pilot wears the helmet to detect the electroencephalogram signals, the whole electroencephalogram electrode bundle is dipped in a conductive paste or conductive liquid container, and the conductive liquid or conductive paste can be filled in the holes at the bottom end of each electroencephalogram electrode. The pilot helmet of the present invention further comprises a blood flow condition detection device comprising: the near-infrared laser diode shown in fig. 4 is used for emitting near-infrared laser with a fixed wavelength, and two reflected light receiving cameras are respectively arranged on two sides of the near-infrared laser diode and used for receiving reflected near-infrared light absorbed and modulated by subcutaneous blood vessels; when the near-infrared laser diode works, laser emitted by the near-infrared laser diode is emitted into subcutaneous blood vessels, is absorbed by oxyhemoglobin in blood, and is reflected to the reflected light receiving camera through skin. The pilot helmet of the present invention further comprises a face color detection device, the face color detection device comprising: a diffuse-reflection fill-in light source as shown in FIG. 7, a 3-panel color-collection camera as shown in FIG. 5, and 1 color card as shown in FIG. 6; as shown in fig. 5, the number of the diffuse reflection fill light sources is 3, which sequentially correspond to the collection cameras; as shown in fig. 5 and 7, each set of diffuse reflection fill light source is annular, the annular structure is concentric with the lens of the collecting camera, and the annular structure is located in front of the collecting camera; as shown in fig. 7 and 5, each set of diffuse reflection fill light source includes 6 patch-type true color LED lamp beads and 1 annular light diffuser, 6 lamp beads are uniformly distributed around the corresponding collecting camera to form an annular structure, and each light diffuser is located at a position of 0.5 cm in front of the lamp bead. As shown in FIG. 5, the color chip is located approximately 2 cm forward of the capture camera and above the top of the capture camera's field of view; the color card consists of 24 standard color blocks arranged in a straight line. As shown in fig. 9, all 3 acquisition cameras can shoot the complete color chart and the skin around the pilot's eyes at the same time. As shown in fig. 4, the face color detection device further includes 3 light source driving circuits, and each circuit is located on the back of the corresponding diffuse reflection fill light source.
The foregoing embodiments set forth numerous specific details to provide a thorough understanding of the present invention, but the invention may be practiced otherwise than as specifically described herein and the scope of the invention is not limited thereby. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A helmet for overall monitoring of the health status of a pilot, comprising:
1) superfine elasticity seta structure brain electricity collection system, it includes: the electroencephalogram electrode bundle array comprises 2 n-th-power electroencephalogram electrode bundles, the electroencephalogram electrode bundles are superfine elastic conductive bristle bundles, each superfine elastic conductive bristle bundle comprises 10-30 superfine elastic conductive bristles, an electrode wire is connected to the top end of each superfine elastic conductive bristle, an end cover is arranged at the top end of each superfine elastic conductive bristle, the electrode wire is communicated to the outside through a hole in the end cover, each superfine elastic conductive bristle comprises a bottom end in contact with a scalp, the end is circular and provided with a blind hole, an air guide hole communicated with the outside is further formed in the bottom of each blind hole, and before electroencephalogram signal detection is carried out, conductive paste or conductive liquid is injected into each blind hole in advance;
2) blood flow situation detection device, it is through gathering pilot subcutaneous blood oxygen concentration change signal, and the discernment blood oxygen signal characteristic indicates whether pilot's head blood flow situation is normal, includes: the near-infrared laser diode is used for emitting near-infrared laser with a fixed wavelength, and two reflected light receiving cameras are respectively arranged on two sides of the near-infrared laser diode and used for receiving reflected near-infrared light absorbed and modulated by subcutaneous blood vessels; when the near-infrared laser diode works, laser emitted by the near-infrared laser diode is emitted into subcutaneous blood vessels, is absorbed by oxyhemoglobin in blood, and is reflected to the reflected light receiving camera through skin; the reflected light receiving camera judges the blood flow state of the head of the pilot by detecting the intensity of reflected light;
3) face colour detection device, it can gather and shoot pilot's eye skin image and judge whether face colour is normal, and it includes: 3 sets of diffuse reflection light supplementing light sources, 3 acquisition cameras and a color card; the 3 sets of diffuse reflection light supplementing light sources sequentially correspond to the 3 acquisition cameras; each set of diffuse reflection light supplementing light source is annular, the annular structure is concentric with the lens of the acquisition camera, and the annular structure is positioned in front of the acquisition camera; each set of diffuse reflection light supplementing light source comprises 6 patch type true color LED lamp beads and 1 annular light diffusing sheet, wherein the 6 lamp beads are uniformly distributed around the corresponding acquisition camera to form an annular structure; each light-diffusing piece is positioned at a position of 0.5 cm right in front of the lamp bead; the color card is positioned at a position about 2 cm above the front of the acquisition camera, so that the color card is positioned at the top of the field of view of the acquisition camera; the color card consists of 24 standard color blocks which are linearly arranged; the 3 acquisition cameras can shoot a complete color card and the skin around the eyes of a pilot at the same time.
2. The electroencephalogram acquisition device according to claim 1, wherein the inner core of the superfine elastic conductive bristles is made of spring steel, and the outer layer of the inner core is plated with silver; the thickness of the plating layer is not more than 0.1mm, and the diameter of the bristles is not more than 0.5 mm.
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| CN202111392482.6A CN114224357B (en) | 2021-11-23 | 2021-11-23 | Helmet for comprehensively monitoring health state of pilot |
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| CN202111392482.6A CN114224357B (en) | 2021-11-23 | 2021-11-23 | Helmet for comprehensively monitoring health state of pilot |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117838139A (en) * | 2024-01-19 | 2024-04-09 | 中国民用航空飞行学院 | Body detection device for pilot in flight |
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| CN102894971A (en) * | 2011-07-29 | 2013-01-30 | 中国科学院沈阳自动化研究所 | Helmet for acquiring brain signal by combining electroencephalography with near-infrared spectroscopy |
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| CN114224357B (en) | 2023-04-11 |
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